Display substrate and display device

Abstract

The invention discloses a display substrate and a display device. The display substrate comprises a display area, and the display area comprises a first display area and a second display area located on at least one side of the first display area; in the first display area, a first minimum vertical distance exists between the surface of one side, far away from the substrate, of the main body part and the surface of one side, far away from the substrate, of the pixel definition layer; in the second display area, a second minimum vertical distance exists between the surface of one side, far away from the substrate, of the main body part and the surface of one side, far away from the substrate, of the pixel definition layer; the first minimum vertical distance is greater than the second minimum vertical distance; the brightness of the second display area is improved.

Description

Technical Field

[0001] This document relates to the field of display technologies, and particularly to a display substrate and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) and Quantum-dot Light Emitting Diodes (QLED) are active light-emitting display devices, which have the advantages of self-luminescence, wide viewing angle, high contrast ratio, low power consumption, extremely high response speed, lightness, flexibility, and low cost. With the continuous development of display technologies, flexible display devices (Flexible Display) that use OLED or QLED as light-emitting devices and are signal-controlled by Thin Film Transistors (TFT) have become the mainstream products in the current display field.

[0003] With more and more applications of displays, we tend to share information with others. However, in special cases, we hope to have privacy. For example, when dealing with company confidential information, the information is easily visible to others nearby; another example is when entering personal information on a mobile phone, personal information is also easily visible to others. Therefore, the switching between display sharing and privacy will gradually form a functional trend.

[0004] However, when the display device is in the anti-peeping mode at the front view angle, the display areas on both sides of the display device are darker than the display area in the middle, resulting in uneven brightness of the display device and poor display effects. Summary of the Invention

[0005] The following is an overview of the subject matter described in detail in this document. This overview is not intended to limit the scope of protection of the claims.

[0006] The present disclosure provides a display substrate and a display device, which improve the brightness of the first display area.

[0007] On the one hand, the present disclosure provides a display substrate, including a display area. The display area includes a light-emitting structure layer disposed on a substrate. The light-emitting structure layer includes a light-emitting device and a pixel definition layer. The light-emitting device includes a first electrode, a light-emitting layer, and a second electrode that are sequentially stacked along a direction away from the substrate. The pixel definition layer is disposed on a side of the first electrode away from the substrate. The pixel definition layer is provided with a pixel opening, and the pixel opening exposes at least a part of the surface of the first electrode. The light-emitting layer includes a main body portion, and a positive projection of the main body portion on the substrate overlaps with a positive projection of the exposed surface of the first electrode on the substrate;

[0008] The display area includes a first display area and a second display area located on at least one side of the first display area; in the first display area, there is a first minimum vertical distance between the surface of the main body portion away from the substrate side and the surface of the pixel definition layer away from the substrate side; in the second display area, there is a second minimum vertical distance between the surface of the main body portion away from the substrate side and the surface of the pixel definition layer away from the substrate side; the first minimum vertical distance is greater than the second minimum vertical distance.

[0009] In an exemplary embodiment, the difference between the first minimum vertical distance and the second minimum vertical distance is greater than 0 micrometers and less than or equal to 2 micrometers.

[0010] In an exemplary embodiment, the first minimum vertical distance is greater than or equal to 1.5 micrometers and less than or equal to 3 micrometers; the second minimum vertical distance is greater than or equal to 1 micrometer and less than 1.5 micrometers.

[0011] In an exemplary embodiment, in the second display area, the first electrode includes a first portion and a second portion connected to at least one side of the first portion, the surface of the first portion is the surface of the first electrode exposed by the pixel opening, the second portion is covered by the pixel definition layer, and the cross-section of the second portion in the direction perpendicular to the substrate is stepped.

[0012] In an exemplary embodiment, the display area further includes an organic dielectric layer disposed between the first electrode and the substrate. In the second display area, the surface of the organic dielectric layer away from the substrate side includes a convex surface and a groove surrounding the convex surface. The convex surface is a flat surface, the convex surface is substantially parallel to the plane where the substrate surface is located, the first portion is disposed on the convex surface, and at least a portion of the second portion covers the bottom wall and side wall of the groove close to the convex surface.

[0013] In an exemplary embodiment, the maximum vertical distance between the convex surface and the bottom wall of the groove is greater than or equal to 0.5 micrometers and less than or equal to 1.5 micrometers.

[0014] In an exemplary embodiment, in the second display area, a first tilt angle is formed between the surface of the main body portion of the light-emitting layer away from the substrate side and the plane where the surface of the substrate is located, and the surface of the main body portion of the light-emitting layer away from the substrate side is tilted toward the first display area.

[0015] In an exemplary embodiment, in the second display area, the surface of the first electrode exposed by the pixel opening is planar, a second inclination angle is formed between the surface of the first electrode exposed by the pixel opening and the surface of the substrate, and the surface of the first electrode exposed by the pixel opening inclines towards the first display area.

[0016] In an exemplary embodiment, the display area further includes an organic dielectric layer disposed between the first electrode and the substrate. In the second display area, the surface of the organic dielectric layer away from the substrate includes a convex surface and a groove surrounding the convex surface. The convex surface is planar, a third inclination angle is formed between the plane where the convex surface is located and the plane of the substrate surface, and the convex surface inclines towards the first display area. At least a part of the first electrode is disposed on the convex surface.

[0017] On the other hand, the present disclosure also provides a display device including the foregoing display substrate.

[0018] Other features and advantages of the present application will be described in the subsequent description. Moreover, some of them will become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained through the solutions described in the description and the drawings. Description of the Drawings

[0019] The drawings are used to provide an understanding of the technical solutions of the present application, and constitute a part of the description. They are used together with the embodiments of the present application to explain the technical solutions of the present application, and do not constitute a limitation to the technical solutions of the present application.

[0020] Figure 1 It is a schematic plan view of the display area of a display substrate according to an embodiment of the present disclosure;

[0021] Figure 2 It is a schematic plan view of a pixel unit in a display substrate according to an embodiment of the present disclosure;

[0022] Figure 3 It is a schematic cross-sectional view of the first display area of a display substrate according to an embodiment of the present disclosure;

[0023] Figure 4 It is a schematic cross-sectional view of the first electrode in the first display area of a display substrate according to an embodiment of the present disclosure;

[0024] Figure 5 It is a schematic cross-sectional view of the second display area of a display substrate according to an embodiment of the present disclosure;

[0025] Figure 6a It is a schematic diagram after forming the organic dielectric layer in the preparation process of the second display area of a display substrate according to an embodiment of the present disclosure;

[0026] Figure 6b Schematic diagram after forming the first electrode in the preparation process of the second display area of a display substrate according to an embodiment of the present disclosure;

[0027] Figure 6c Schematic diagram after forming the pixel definition layer in the preparation process of the second display area of a display substrate according to an embodiment of the present disclosure;

[0028] Figure 6d Schematic diagram after forming the light-emitting layer in the preparation process of the second display area of a display substrate according to an embodiment of the present disclosure;

[0029] Figure 6e Schematic diagram after forming the first light-shielding layer in the preparation process of the second display area of a display substrate according to an embodiment of the present disclosure;

[0030] Figure 6f Schematic diagram after forming the touch control structure layer and the second light-shielding layer in the preparation process of the second display area of a display substrate according to an embodiment of the present disclosure;

[0031] Figure 7 Schematic cross-sectional structure diagram of the second display area on one side of another display substrate according to an embodiment of the present disclosure;

[0032] Figure 8 Schematic cross-sectional structure diagram of the second display area on the other side of another display substrate according to an embodiment of the present disclosure;

[0033] Figure 9 Schematic cross-sectional structure diagram of the first electrode in the second display area of another display substrate according to an embodiment of the present disclosure. Detailed implementation manners

[0034] This application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those of ordinary skill in the art that there can be more embodiments and implementation solutions within the scope covered by the embodiments described in this application. Although many possible feature combinations are shown in the drawings and discussed in the detailed implementation manners, many other combination ways of the disclosed features are also possible. Unless specifically restricted, any feature or element of any embodiment can be combined with any other feature or element in any other embodiment, or can replace any other feature or element in any other embodiment.

[0035] This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features, and elements of this application can also be combined with any conventional features or elements to form a unique inventive solution. Any feature or element of any embodiment can also be combined with features or elements from other inventive solutions to form another unique inventive solution. Therefore, it should be understood that any feature shown and / or discussed in this application can be implemented alone or in any suitable combination. Therefore, the embodiments are not subject to other limitations except those made in accordance with the appended claims and their equivalents. In addition, various modifications and changes can be made within the scope of the appended claims.

[0036] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, to the extent that the method or process does not depend on the specific sequence of steps described herein, the method or process should not be limited to the specific sequence of steps described. As will be understood by those of ordinary skill in the art, other sequences of steps are possible. Therefore, the specific sequence of steps set forth in the specification should not be construed as a limitation on the claims. In addition, the claims directed to the method and / or process should not be limited to performing their steps in the order written, and those skilled in the art can readily understand that these orders can vary and still remain within the spirit and scope of the embodiments of this application.

[0037] Embodiments of the present disclosure provide a display substrate, including a display area, the display area including a light-emitting structure layer disposed on a substrate, the light-emitting structure layer including a light-emitting device and a pixel definition layer, the light-emitting device including a first electrode, a light-emitting layer, and a second electrode sequentially stacked along a direction away from the substrate, the pixel definition layer being disposed on a side of the first electrode away from the substrate, the pixel definition layer being provided with a pixel opening, the pixel opening exposing at least a partial surface of the first electrode, the light-emitting layer including a main body portion, a positive projection of the main body portion on the substrate overlapping a positive projection of the exposed surface of the first electrode on the substrate;

[0038] The display area includes a first display area and a second display area located on at least one side of the first display area; in the first display area, there is a first minimum vertical distance between a surface of the main body portion away from the substrate and a surface of the pixel definition layer away from the substrate; in the second display area, there is a second minimum vertical distance between a surface of the main body portion away from the substrate and a surface of the pixel definition layer away from the substrate; the first minimum vertical distance is greater than the second minimum vertical distance.

[0039] Figure 1 It is a schematic plan view of a display area of a display substrate according to an embodiment of the present disclosure;Figure 2 This is a schematic plan view of a pixel unit in a display substrate according to an embodiment of the present disclosure. Among them, Figure 2 The shown pixel unit may be Figure 1 The shown one pixel unit. In an exemplary embodiment, as Figure 1 and Figure 2 shown, the display substrate may include a display area and a border area located around the display area. The display area of the display substrate may include a first display area 100 and second display areas 200 located on opposite sides of the first display area 100 in a first direction X. Exemplarily, the first display area 100 may be a middle area of the display area in the first direction X, and the second display areas 200 may be edge areas on opposite sides of the display area in the first direction X. Both the first display area 100 and the second display areas 200 include a plurality of pixel units P arranged in a matrix, and both the first display area 100 and the second display areas 200 are configured to display static or dynamic images.

[0040] In an exemplary embodiment, in some anti-peeking / shareable switchable scenarios, at least one of the plurality of pixel units P includes an anti-peeking area P1 and a sharing area P2. The anti-peeking area P1 includes a plurality of anti-peeking sub-pixels, and a light-shielding area 20 is provided in the anti-peeking area P1. The light-shielding area 20 is provided around the periphery of each anti-peeking sub-pixel, and the light-shielding area 20 is configured to block large-angle light emitted by the anti-peeking sub-pixels to achieve an anti-peeking effect; the sharing area P2 includes a plurality of sharing sub-pixels. A light-shielding area may not be provided between adjacent sharing sub-pixels in some directions to improve the light-emitting efficiency of large-angle light in some directions; a light-shielding area may also be provided between adjacent sharing sub-pixels in some directions to reduce the light-emitting efficiency of large-angle light in some directions.

[0041] In some embodiments, when only anti-peeking in some fixed directions is required and sharing switching is not required, the pixel unit may only include anti-peeking sub-pixels and not include sharing sub-pixels.

[0042] The following structural design of the anti-peeking sub-pixels in this application is applicable to various embodiments in this application.

[0043] In an exemplary embodiment, both the anti-peeking sub-pixels and the sharing sub-pixels include a pixel driving circuit and a light-emitting device. The pixel driving circuit is connected to the light-emitting device, and the pixel driving circuit is configured to output a corresponding current to the light-emitting device. The light-emitting device is configured to emit light with a corresponding brightness in response to the current output by the pixel driving circuit. Among them, the light-emitting devices of the anti-peeking sub-pixels and the sharing sub-pixels of the same color are electrically connected to different pixel driving circuits respectively; or, the light-emitting devices of the anti-peeking sub-pixels and the sharing sub-pixels of the same color share a pixel driving circuit.

[0044] In an exemplary embodiment, when the display substrate is in the shared mode, only the sub-pixels can be shared and driven to emit light by the pixel driving circuit, or both the shared sub-pixels and the anti-peeking sub-pixels can be driven to emit light by the pixel driving circuit; when the display substrate is in the anti-peeking mode, only the anti-peeking sub-pixels can be driven to emit light by the pixel driving circuit.

[0045] In an exemplary embodiment, the anti-peeking region P1 in the pixel unit P includes a first anti-peeking sub-pixel P1-1 that emits light of a first color, a second anti-peeking sub-pixel P1-2 that emits light of a second color, and a third anti-peeking sub-pixel P1-3 that emits light of a third color. The first anti-peeking sub-pixel P1-1 can be a red sub-pixel that emits red (R) light, the second anti-peeking sub-pixel P1-2 can be a blue sub-pixel that emits blue (B) light, and the third anti-peeking sub-pixel P1-3 can be a green sub-pixel that emits green (G) light. The shapes of the first anti-peeking sub-pixel P1-1, the second anti-peeking sub-pixel P1-2, and the third anti-peeking sub-pixel P1-3 are all rectangles and are arranged at intervals along the first direction X. In some embodiments, the shapes of the first anti-peeking sub-pixel P1-1, the second anti-peeking sub-pixel P1-2, and the third anti-peeking sub-pixel P1-3 can be any one or more of a circle, an ellipse, a triangle, a rhombus, a trapezoid, a parallelogram, a pentagon, a hexagon, and other polygons. The present disclosure does not limit this here, and the arrangement manner of the anti-peeking sub-pixels is also not limited.

[0046] In an exemplary embodiment, the shared region P2 in the pixel unit P includes a first shared sub-pixel P2-1 that emits light of a first color, a second shared sub-pixel P2-2 that emits light of a second color, and a third shared sub-pixel P2-3 that emits light of a third color. The first shared sub-pixel P2-1 can be a red sub-pixel that emits red (R) light, the second shared sub-pixel P2-2 can be a blue sub-pixel that emits blue (B) light, and the third shared sub-pixel P2-3 can be a green sub-pixel that emits green (G) light. The shapes of the first shared sub-pixel P2-1, the second shared sub-pixel P2-2, and the third shared sub-pixel P2-3 are all rectangles and are arranged at intervals along the first direction X. In some embodiments, the shapes of the first shared sub-pixel P2-1, the second shared sub-pixel P2-2, and the third shared sub-pixel P2-3 can be any one or more of a circle, an ellipse, a triangle, a rhombus, a trapezoid, a parallelogram, a pentagon, a hexagon, and other polygons. The present disclosure does not limit this here, and the arrangement manner of the shared sub-pixels is also not limited.

[0047] Exemplarily, the first shared sub-pixel P2-1 and the first anti-peeping sub-pixel P1-1 may be arranged at intervals along the second direction Y, the second shared sub-pixel P2-2 and the second anti-peeping sub-pixel P1-2 may be arranged at intervals along the second direction Y, and the third shared sub-pixel P2-3 and the third anti-peeping sub-pixel P1-3 may be arranged at intervals along the second direction Y. Wherein, both the first direction X and the second direction Y are parallel to the plane where the display substrate is located and intersect with each other. Exemplarily, the first direction X is perpendicular to the second direction Y. In some embodiments, the shared sub-pixels and the anti-peeping sub-pixels may also adopt other arrangement manners, which are not limited in this disclosure.

[0048] Figure 3 It is a schematic cross-sectional structure diagram of a first display area of a display substrate according to an embodiment of the present disclosure. Wherein, Figure 3 may be Figure 1 a cross-sectional view in the direction of A-A' in Figure 3 which schematically shows Figure 1 three anti-peeping sub-pixels in the anti-peeping area of a pixel unit in the first display area in Figure 3 As shown in, in the direction perpendicular to the display substrate, the first display area of the display substrate according to an embodiment of the present disclosure may include: a substrate 101, a driving circuit layer 102 disposed on the substrate 101, an organic dielectric layer 109 disposed on the side of the driving circuit layer 102 away from the substrate 101, a light-emitting structure layer disposed on the side of the organic dielectric layer 109 away from the substrate 101, a packaging structure layer 103 disposed on the side of the light-emitting structure layer away from the substrate 101, a first light-shielding layer 21 disposed on the side of the packaging structure layer 103 away from the substrate 101, a first insulating layer 104 disposed on the side of the first light-shielding layer 21 away from the substrate 101, a second insulating layer 105 disposed on the side of the first insulating layer 104 away from the substrate 101, a touch control structure layer disposed on the side of the second insulating layer 105 away from the substrate 101, a third insulating layer 106 disposed on the side of the touch control structure layer away from the substrate 101, a second light-shielding layer 22 disposed on the side of the third insulating layer 106 away from the substrate 101, a fourth insulating layer 107 disposed on the side of the second light-shielding layer 22 away from the substrate 101, a light condensing structure layer disposed on the side of the fourth insulating layer 107 away from the substrate 101, and a fifth insulating layer 108 disposed on the side of the light condensing structure layer away from the substrate 101.

[0049] In some embodiments, the first display area of the display substrate according to an embodiment of the present disclosure may not be provided with the first light-shielding layer and the second light-shielding layer, so that the touch control electrodes in the touch control structure layer are multiplexed as a light-shielding structure to block the large-angle light emitted from the anti-peeping sub-pixels; or, the first display area of the display substrate according to an embodiment of the present disclosure may include other numbers of light-shielding layers, for example, 1 light-shielding layer, 3 light-shielding layers, 4 light-shielding layers, etc., and the touch control electrodes in the touch control structure layer are multiplexed as a light-shielding structure to block the large-angle light emitted from the anti-peeping sub-pixels.

[0050] In an exemplary embodiment, the substrate 101 may be a flexible substrate. For example, the material of the substrate 101 may be at least one of polyimide (PI), polyethylene naphthalate (PEN), and polyethylene terephthalate (PET). The flexible substrate may be a single-layer structure or a multi-layer structure. Exemplarily, the substrate may include a first flexible material layer and a second flexible material layer stacked on top of each other. In yet another exemplary embodiment, the substrate may include a first flexible material layer, a first inorganic material layer, a second flexible material layer, and a second inorganic material layer stacked on top of each other. The materials of the first flexible material layer and the second flexible material layer may be polyimide (PI), polyethylene terephthalate (PET), or a surface-treated polymer soft film, etc. The materials of the first inorganic material layer and the second inorganic material layer may be silicon nitride (SiNx) or silicon oxide (SiOx), etc., for improving the water and oxygen resistance of the substrate. The first inorganic material layer and the second inorganic material layer may be referred to as a barrier layer or a buffer layer.

[0051] In some possible implementation manners, the substrate may be a rigid substrate. For example, the substrate may be a glass substrate.

[0052] In an exemplary embodiment, the driving circuit layer 102 may include pixel driving circuits, and the pixel driving circuits may include multiple transistors and storage capacitors. The transistors may be connected to the light-emitting devices in the light-emitting structure layer.

[0053] In an exemplary embodiment, the light-emitting structure layer may include multiple light-emitting devices, and the light-emitting devices may be organic light-emitting diodes (OLEDs) or quantum dot light-emitting diodes (QLEDs). The light-emitting devices may at least include a first electrode 11, a light-emitting functional layer, and a second electrode 13 stacked in sequence along the direction away from the substrate 101. The first electrode 11 may be connected to the transistors of the driving circuit layer 102, the light-emitting functional layer is connected to the first electrode 11, the second electrode 13 is connected to the light-emitting functional layer, and the light-emitting functional layer emits light under the drive of the first electrode 11 and the second electrode 13. Among them, the first electrode 11 may be referred to as the anode, and the second electrode 13 may be referred to as the cathode.

[0054] In an exemplary embodiment, the light-emitting functional layer at least includes a light-emitting layer 12. The light-emitting functional layer may further include any one or more of the following layers: a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer (EBL), a hole blocking layer (HBL), an electron transport layer (ETL), and an electron injection layer (EIL). In some examples, one or more of the hole injection layer, the hole transport layer, the electron blocking layer, the hole blocking layer, the electron transport layer, and the electron injection layer of all sub-pixels may be a common layer that is connected together, and the light-emitting layers 12 of adjacent sub-pixels are disconnected from each other.

[0055] In an exemplary embodiment, the first display area of the display substrate according to the embodiment of the present disclosure further includes a pixel definition layer 31 and a spacer layer 32. The pixel definition layer 31 is disposed on the side of the first electrode 11 away from the substrate 101. The pixel definition layer 21 is provided with pixel openings that define sub-pixels. The pixel openings expose at least a part of the surface of the first electrode 11. The light-emitting layer 12 covers the pixel openings and is connected to the first electrode 11 exposed by the pixel openings. The spacer layer 32 is disposed on the side of the pixel definition layer 31 away from the substrate 101. The orthographic projection of the spacer layer 32 on the substrate 101 is located in the orthographic projection of the surface of the pixel definition layer 21 on the side away from the substrate 101 on the substrate 101. The spacer layer 32 is configured to support a mask plate for vapor-depositing at least part of the film layers in the light-emitting functional layer.

[0056] In an exemplary embodiment, a first light-shielding layer 21 is disposed on the side of the pixel definition layer 31 and the spacer layer 32 away from the substrate. The first light-shielding layer 21 is configured to block large-angle light emitted by the light-emitting devices of the privacy sub-pixels to achieve a privacy effect. For example, the material of the first light-shielding layer 21 may be a black matrix (BM). A first light-transmitting opening is provided in the first light-shielding layer 21. At least a part of the orthographic projection of the first light-transmitting opening on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate. The first light-transmitting opening is configured to transmit small-angle light emitted by the light-emitting devices of the privacy sub-pixels.

[0057] In an exemplary embodiment, a touch structure layer is disposed on the side of the first light-shielding layer 21 away from the substrate. The touch structure layer may include a first touch electrode 51 disposed on the second insulating layer 105, a touch insulating layer disposed on the side of the first touch electrode 51 away from the substrate, and a second touch electrode 52 disposed on the side of the touch insulating layer away from the substrate. The second touch electrode 52 may be connected to the first touch electrode 51 through a via hole provided in the touch insulating layer.

[0058] In an exemplary embodiment, the first touch electrode 51 and the second touch electrode 52 may be arranged in various ways. For example, the first touch electrode 51 may connect adjacent second touch electrodes 52; or, the second touch electrode 52 may connect adjacent first touch electrodes 51. The present disclosure does not limit this here.

[0059] In an exemplary embodiment, the second light-shielding layer 22 is disposed on a side of the touch structure layer away from the substrate. The second light-shielding layer 22 is configured to block large-angle light emitted by the light-emitting devices of the privacy sub-pixels, thereby achieving a privacy effect. For example, the material of the second light-shielding layer 22 may be a black matrix (BM). A second light-transmitting opening is provided in the second light-shielding layer 22. At least a part of the orthographic projection of the second light-transmitting opening on the substrate overlaps with the orthographic projection of the corresponding pixel opening 2 on the substrate. The second light-transmitting opening is configured to transmit small-angle light emitted by the light-emitting devices of the privacy sub-pixels.

[0060] In an exemplary embodiment, the light condensing structure layer is disposed on a side of the second light-shielding layer 22 away from the substrate. The light condensing structure layer is configured to converge the light emitted by the corresponding light-emitting devices, thereby improving the brightness of the display substrate in the privacy mode. The light condensing structure layer includes a plurality of convex lenses 40. At least a part of the orthographic projection of the convex lens 40 on the substrate overlaps with the orthographic projection of the light-emitting layer 12 of the corresponding light-emitting device on the substrate.

[0061] In an exemplary embodiment, the fifth insulating layer 108 is disposed on a side of the light condensing structure layer away from the substrate and is in contact with the plurality of convex lenses 40 of the light condensing structure layer. The refractive index of the fifth insulating layer 108 is greater than that of the convex lens 40, so as to avoid total internal reflection of light at the junction of the convex lens 40 and the fifth insulating layer 108 and improve the light extraction efficiency of the display substrate.

[0062] Figure 4 This is a schematic cross-sectional structure diagram of a first electrode in a first display area of a display substrate according to an embodiment of the present disclosure. Among them, Figure 4 It may be Figure 3 a cross-sectional view of a first electrode of a privacy sub-pixel. In an exemplary embodiment, as shown in Figure 3 and Figure 4 the first electrode 11 is disposed on the surface of the organic dielectric layer 109 away from the substrate 101 and is in direct contact with the surface of the organic dielectric layer 109 away from the substrate 101. The surface of the first electrode 11 away from the substrate 101 is a plane and is substantially parallel to the surface of the substrate 101. The light-emitting layer 12 at least includes a main body portion. The main body portion of the light-emitting layer 12 is disposed on the surface of the exposed first electrode 11 away from the substrate 101. The orthographic projection of the main body portion of the light-emitting layer 12 on the substrate overlaps with the orthographic projection of the surface of the first electrode 11 exposed by the pixel definition layer on the substrate. There is a first minimum vertical distance L1 between the surface of the main body portion of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel definition layer 31 away from the substrate 101; the range of the first minimum vertical distance L1 is: 1.5 μm ≤ L1 ≤ 3 μm.

[0063] In some embodiments, the light-emitting layer further includes a peripheral portion, which is integrally connected to at least one side of the main body portion. The peripheral portion is disposed on the side wall of the pixel definition layer closer to the pixel opening, and the orthographic projection of the peripheral portion on the substrate does not overlap with the orthographic projection of the surface of the first electrode exposed by the pixel definition layer on the substrate.

[0064] Figure 5 FIG. is a schematic cross-sectional structure diagram of a second display area of a display substrate according to an embodiment of the present disclosure. Among them, Figure 5 may be Figure 1 a cross-sectional view taken along the B-B' direction in Figure 5 schematically showing Figure 1 three anti-peeping sub-pixels of the anti-peeping area in a pixel unit of the second display area in Figure 5 As shown in Figure 3 the structure of the second display area of the display substrate in this exemplary embodiment is basically the same as that of the first display area shown in Figure 3 The difference is that the structures of the organic dielectric layer 109 and the first electrode 11 in the second display area are different from those of the organic dielectric layer 109 and the first electrode 11 in the first display area shown in

[0065] The following is an exemplary description through the manufacturing process of the second display area of the display substrate. The "patterning process" mentioned in the present disclosure, for metal materials, inorganic materials or transparent conductive materials, includes processes such as coating photoresist, mask exposure, development, etching, and photoresist stripping. For organic materials, it includes processes such as coating organic materials, mask exposure, and development. Deposition can be carried out by any one or more of sputtering, evaporation, and chemical vapor deposition. Coating can be carried out by any one or more of spraying, spin coating, and inkjet printing. Etching can be carried out by any one or more of dry etching and wet etching. The present disclosure does not make any limitations. A "thin film" refers to a thin film made of a certain material on a substrate by using deposition, coating, or other processes. If the "thin film" does not require a patterning process during the entire manufacturing process, the "thin film" can also be referred to as a "layer". If the "thin film" requires a patterning process during the entire manufacturing process, it is called a "thin film" before the patterning process and a "layer" after the patterning process. The "layer" after the patterning process contains at least one "pattern". The statement "A and B are disposed in the same layer" in the present disclosure means that A and B are formed simultaneously through the same patterning process. The "thickness" of a film layer is the dimension of the film layer in the direction perpendicular to the display substrate. In the exemplary embodiment of the present disclosure, the statement "the orthographic projection of B is within the range of the orthographic projection of A" or "the orthographic projection of A includes the orthographic projection of B" means that the boundary of the orthographic projection of B falls within the boundary of the orthographic projection of A, or the boundary of the orthographic projection of A overlaps with the boundary of the orthographic projection of B.

[0066] In an exemplary embodiment, the manufacturing process of the second display area of the display substrate in this exemplary embodiment may include the following operations.

[0067] (1) Form an organic dielectric layer. In an exemplary embodiment, forming the organic dielectric layer may include: first forming a driving circuit layer 102 on a substrate 101; subsequently, depositing an organic dielectric thin film on the driving circuit layer 102, and patterning the organic dielectric thin film through a patterning process to form an organic dielectric layer 109 covering the driving circuit layer 102, as Figure 6a shown. Among them, the organic dielectric layer 109 may also be referred to as a planarization layer (PLN).

[0068] In an exemplary embodiment, one side surface of the organic dielectric layer 109 away from the substrate 101 includes a convex surface 109-1 and a groove 109-2. The convex surface 109-1 and the groove 109-2 make the one side surface of the organic dielectric layer 109 away from the substrate 101 form a concavo-convex structure. The convex surface 109-1 is a flat surface, and the convex surface 109-1 is substantially parallel to the surface of the substrate 101. A plurality of convex surfaces 109-1 are arranged at intervals along the direction parallel to the substrate. The cross-sectional shape of the groove 109-2 perpendicular to the substrate 101 is U-shaped. The groove 109-2 is annular and is arranged around the periphery of the convex surface 109-1. The maximum vertical distance between the bottom wall of the groove 109-2 and the convex surface 109-1 is L3, and the range of the maximum vertical distance L3 is: 0.5 μm ≤ L3 ≤ 1.5 μm. The vertical distance between the convex surface 109-1 and the one side surface of the organic dielectric layer 109 close to the substrate 101 is L4, and the range of the vertical distance L4 is: 1.5 μm < L4 ≤ 2.5 μm.

[0069] (2) Form a first electrode. In an exemplary embodiment, forming the first electrode may include: depositing a first conductive thin film on the organic dielectric layer 109 on the substrate on which the foregoing pattern is formed, and patterning the first conductive thin film through a patterning process to form a first electrode 11, as Figure 6b shown.

[0070] In an exemplary embodiment, the first electrode 11 includes a first portion 11-1 and a second portion 11-2. The first portion 11-1 is in a block shape and is disposed on the middle region of the convex surface 109-1 of the organic dielectric layer 109. The surface of the first portion 11-1 away from the substrate 101 is a plane, and the surface of the first portion 11-1 away from the substrate 101 is the surface of the first electrode exposed by the pixel opening of the subsequent formed pixel definition layer; the second portion 11-2 is in a ring shape and is disposed around the periphery of the first portion 11-1 and is integrally connected to the first portion 11-1. The cross-section of the second portion 11-2 in the direction perpendicular to the substrate 101 is in a stepped shape including 1 stepped layer. A part of the second portion 11-2 covers the edge region of the convex surface 109-1 of the organic dielectric layer 109, and another part of the second portion 11-2 covers the bottom wall and the side wall of the groove 109-2 of the organic dielectric layer 109 near the convex surface 109-1.

[0071] (3) Forming the pixel definition layer. In an exemplary embodiment, forming the pixel definition layer may include: depositing a pixel definition thin film covering the first electrode 11 on the organic dielectric layer 109 on the substrate on which the foregoing pattern is formed, and patterning the pixel definition thin film through a patterning process to form the pixel definition layer 31, as Figure 6c shown.

[0072] In an exemplary embodiment, the pixel definition layer 31 covers the second portion 11-2 of the first electrode 11. At least part of the orthographic projection of the pixel definition layer 31 on the substrate 101 overlaps with the orthographic projection of the groove 109-2 of the organic dielectric layer 109 on the substrate 101, so that at least part of the pixel definition layer 31 is located in the groove 109-2. A pixel opening 31-1 is provided in the pixel definition layer 31, and the pixel opening 31-1 exposes the surface of the first portion 11-1 of the first electrode 11; the orthographic projection of the side of the pixel opening 31-1 close to the substrate 101 on the substrate 101 does not overlap with the orthographic projection of the second portion 11-2 of the first electrode 11 on the substrate 101.

[0073] In the embodiment of the present disclosure, the display substrate is configured such that the first portion 11-1 of the first electrode 11 is disposed on the convex surface 109-1 of the organic dielectric layer 109, and the first portion 11-1 is elevated by the convex surface 109-1. Compared with the first display area of the display substrate, the vertical distance between the surface of the pixel defining layer 31 away from the substrate and the surface of the first portion 11-1 of the first electrode 11 away from the substrate in the second display area is reduced. As a result, the vertical distance between the surface of the light-emitting layer 12 formed on the first portion 11-1 away from the substrate and the surface of the pixel defining layer 31 away from the substrate is reduced, the shielding effect of the pixel defining layer 31 on the large-angle light emitted by the light-emitting layer 12 is reduced, the brightness of the second display area of the display substrate in the front view in the anti-peeping mode is improved, and the display defect caused by the lower brightness of the second display area compared with the first display area is eliminated.

[0074] (4) Form the light-emitting layer. In an exemplary embodiment, forming the light-emitting layer may include: on the substrate on which the foregoing pattern is formed, first form a spacer layer 32 on the pixel defining layer 31; subsequently, place a mask on the spacer layer 32, and through the mask, form a light-emitting structure layer on the first electrode 11 exposed by the pixel defining layer 31. The light-emitting structure layer at least includes a light-emitting layer 12, as Figure 6d shown.

[0075] In an exemplary embodiment, the light-emitting layer 12 at least includes a main portion. The main portion of the light-emitting layer 12 is disposed on the surface of the first electrode 11 away from the substrate 101 exposed by the pixel opening 31-1 and is connected to the first electrode 11. There is a second minimum vertical distance L2 between the surface of the main portion of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel defining layer 31 away from the substrate 101. The range of the second minimum vertical distance L2 is: 1 μm ≤ L2 < 1.5 μm.

[0076] In an exemplary embodiment, the second minimum vertical distance L2 between the surface of the main portion of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel defining layer 31 away from the substrate 101 in the second display area, and the first minimum vertical distance L1 between the surface of the main portion of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel defining layer 31 away from the substrate 101 in the first display area satisfy the relationship: L2 < L1.

[0077] In an embodiment of the present disclosure, the display substrate is configured such that a first portion 11-1 of the first electrode 11 is disposed on a convex surface 109-1 of the organic dielectric layer 109, and the first portion 11-1 is elevated by the convex surface 109-1. Compared with the first display region of the display substrate, the vertical distance between the surface of the pixel defining layer 31 away from the substrate and the surface of the first portion 11-1 of the first electrode 11 away from the substrate in the second display region is reduced, so that the second minimum vertical distance L2 between the surface of the main body of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel defining layer 31 away from the substrate 101 in the second display region is less than the second minimum vertical distance L1 between the surface of the main body of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel defining layer 31 away from the substrate 101 in the first display region. Thereby, the brightness of the second display region of the display substrate in the front view of the anti-peeking mode is improved, and the display defect caused by the lower brightness of the second display region compared with the first display region is eliminated.

[0078] In an exemplary embodiment, the second minimum vertical distance L2 between the surface of the main body of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel defining layer 31 away from the substrate 101 in the second display region, and the first minimum vertical distance L1 between the surface of the main body of the light-emitting layer 12 away from the substrate 101 and the surface of the pixel defining layer 31 away from the substrate 101 in the first display region satisfy the relation: 0 μm ≤ L1 - L2 ≤ 2 μm.

[0079] In an embodiment of the present disclosure, the display substrate is configured such that the difference between the first minimum vertical distance L1 in the first display region and the second minimum vertical distance L2 in the second display region is greater than 0 μm and less than or equal to 2 μm, so as to improve the brightness of the second display region of the display substrate in the front view of the anti-peeking mode, and eliminate the display defect caused by the lower brightness of the second display region compared with the first display region; at the same time, excessive light emission at large viewing angles in the second display region is avoided, ensuring the anti-peeking effect.

[0080] (5) Form a first light-shielding layer. In an exemplary embodiment, forming the first light-shielding layer may include: depositing a second conductive thin film on the pixel defining layer 31 on the substrate on which the foregoing pattern is formed, patterning the second conductive thin film through a patterning process to form a second electrode 13 covering the light-emitting layer 12, and the second electrode 13 may be a common layer; subsequently, forming a packaging structure layer 103 on the second electrode 13; subsequently, depositing a first light-shielding thin film on the packaging structure layer 103, and patterning the first light-shielding thin film through a patterning process to form a first light-shielding layer 21 disposed on the packaging structure layer 103, as Figure 6e shown. Among them, the first electrode 11, the light-emitting functional layer, and the second electrode 13 form a light-emitting device of an anti-peeking sub-pixel.

[0081] In an exemplary embodiment, a first light-shielding layer 21 is provided with a first light-transmitting opening 21-1. At least a part of the orthographic projection of the first light-transmitting opening 21-1 on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate, so that the light rays with a small viewing angle emitted by the light-emitting layer 12 can be transmitted through the first light-transmitting opening 21-1, and the light rays with a large viewing angle emitted by the light-emitting layer 12 are blocked by the first light-shielding layer 21, achieving an anti-peeping effect.

[0082] (6) Form a touch control structure layer and a second light-shielding layer. In an exemplary embodiment, forming the touch control structure layer and the second light-shielding layer may include: on the substrate on which the foregoing pattern is formed, first form a first insulating layer 104 covering the first light-shielding layer 21; subsequently, form a second insulating layer 105 on the first insulating layer 104; subsequently, form a first touch control electrode 51 on the second insulating layer 105. At least a part of the orthographic projection of the first touch control electrode 51 on the substrate overlaps with the orthographic projection of the pixel definition layer 31 on the substrate; subsequently, form a touch control insulating layer covering the first touch control electrode 51, and form a via exposing at least a part of the first touch control electrode 51 in the touch control insulating layer; subsequently, form a second touch control electrode 52 on the touch control insulating layer. At least a part of the orthographic projection of the second touch control electrode 52 on the substrate overlaps with the orthographic projection of the pixel definition layer 31 on the substrate, and the second touch control electrode 52 can be connected to the first touch control electrode 51 through the via; subsequently, form a third insulating layer 106 covering the second touch control electrode 52 on the touch control insulating layer; subsequently, deposit a second light-shielding thin film on the third insulating layer 106, and pattern the second light-shielding thin film through a patterning process to form a second light-shielding layer 22 provided on the third insulating layer 106, as Figure 6f shown. Among them, the first touch control electrode 51 and the second touch control electrode 52 form a touch control structure layer.

[0083] In an exemplary embodiment, a second light-shielding layer 22 is provided with a second light-transmitting opening 22-1. At least a part of the orthographic projection of the second light-transmitting opening 22-1 on the substrate overlaps with the orthographic projection of the corresponding pixel opening on the substrate, so that the light rays with a small viewing angle emitted by the light-emitting layer 12 can be transmitted through the second light-transmitting opening 22-1, and the light rays with a large viewing angle emitted by the light-emitting layer 12 are blocked by the second light-shielding layer 22, achieving an anti-peeping effect.

[0084] (7) Form a light condensing structure layer. In an exemplary embodiment, forming the light condensing structure layer may include: on the substrate on which the foregoing pattern is formed, first form a fourth insulating layer 107 covering the second light shielding layer 22; subsequently, deposit a low refractive index dielectric thin film on the fourth insulating layer 107, and pattern the low refractive index dielectric thin film through a patterning process to form a plurality of convex lenses 40 disposed on the fourth insulating layer 107. The positive projection of the convex lens 40 on the substrate overlaps at least partially with the positive projection of the light emitting layer 12 of the corresponding light emitting device on the substrate. The convex lens 40 is configured to converge the light emitted from the light emitting layer 12 of the corresponding light emitting device; subsequently, deposit a high refractive index dielectric thin film covering the plurality of convex lenses 40 on the fourth insulating layer 107 to form a fifth insulating layer 108 with the high refractive index dielectric thin film, as Figure 5 shown. Among them, the plurality of convex lenses 40 form a light condensing structure layer; the refractive index of the fifth insulating layer 108 is greater than that of the convex lens 40.

[0085] Thus, the second display area of the display substrate of this embodiment is fabricated on the substrate.

[0086] In the display substrate according to the embodiment of the present disclosure, by raising the first part 11-1 of the first electrode 11 on the convex surface 109-1 of the organic dielectric layer 109 in the second display area, compared with the first display area, the vertical distance between the surface of the light emitting layer 12 on the first part 11-1 away from the substrate and the surface of the pixel defining layer 31 away from the substrate in the second display area is reduced, the shielding effect of the pixel defining layer on the large-angle light emitted from the light emitting layer 12 is reduced, the brightness of the second display area of the display substrate in the front view in the anti-peeping mode is improved, and the display defect caused by the lower brightness of the second display area compared with the first display area is eliminated.

[0087] In some embodiments, the structures of some shared sub-pixels in the display substrate of the present application may be substantially the same as the structures of the above anti-peeping sub-pixels, that is, the surface of the organic dielectric layer of the shared sub-pixel away from the substrate includes a convex surface and a groove. The convex surface is substantially parallel to the surface of the substrate. At least part of the first electrode is disposed on the convex surface and is raised by the convex surface to reduce the vertical distance between the surface of the light emitting layer on the first electrode away from the substrate and the surface of the pixel defining layer away from the substrate, reduce the shielding effect of the pixel defining layer on the large-angle light emitted from the light emitting layer, and improve the light extraction efficiency. Details are not described herein again in the present disclosure.

[0088] Figure 7 is a schematic cross-sectional structure diagram of a second display area on one side of another display substrate according to an embodiment of the present disclosure; Figure 8 is a schematic cross-sectional structure diagram of a second display area on the other side of another display substrate according to an embodiment of the present disclosure. Among them, Figure 7 may be Figure 1 a cross-sectional view in the B-B' direction in Figure 7illustrates Figure 1 Three anti-peeping sub-pixels in the anti-peeping area of a pixel unit in the second display area on the side opposite to the first direction X of the first display area in Figure 8 It can be Figure 1 A cross-sectional view in the C-C' direction in Figure 8 illustrates Figure 1 Three anti-peeping sub-pixels in the anti-peeping area of a pixel unit in the second display area on the side of the first display area in the first direction X in Figure 7 and Figure 8 As shown in Figure 5 The structure of the second display area of the display substrate in this exemplary embodiment is basically the same as that of the second display area shown in Figure 5 The difference is that the organic dielectric layer 109 and the first electrode 11 in the second display area are different from the structures of the organic dielectric layer 109 and the first electrode 11 in the second display area shown in

[0089] In the exemplary embodiment, in the second display area, the surface of the organic dielectric layer 109 away from the substrate 101 includes a convex surface 109-1 and a groove 109-2. The convex surface 109-1 is a plane, and the convex surface 109-1 forms a third inclination angle with the surface of the substrate 101. The third inclination angle can be an acute angle. The convex surface 109-1 inclines towards the first display area, so that the vertical distance from the side of the convex surface 109-1 away from the first display area to the surface of the pixel defining layer 31 away from the substrate is less than the vertical distance from the side of the convex surface 109-1 close to the first display area to the surface of the pixel defining layer 31 away from the substrate. The vertical distance from the side of the convex surface 109-1 away from the first display area to the surface of the pixel defining layer 31 away from the substrate is the minimum vertical distance from the convex surface 109-1 to the surface of the pixel defining layer 31 away from the substrate. The cross-sectional shape of the groove 109-2 perpendicular to the substrate 101 is L-shaped, and the groove 109-2 is annular and is arranged around the periphery of the convex surface 109-1.

[0090] In the exemplary embodiment, at least a part of the orthographic projection of the pixel defining layer 31 on the substrate 101 overlaps with the orthographic projection of the groove 109-2 of the organic dielectric layer 109 on the substrate 101, so that at least a part of the pixel defining layer 31 is located in the groove 109-2. Compared with the first display area of the display substrate, the vertical distance between the surface of the pixel defining layer 31 away from the substrate and the surface of the first part 11-1 of the first electrode 11 away from the substrate in the second display area is reduced.

[0091] In an exemplary embodiment, in the second display area, the first electrode 11 is disposed on the convex surface 109-1. The pixel opening of the pixel definition layer 31 exposes at least a part of the surface of the first electrode 11. The surface of the first electrode 11 exposed by the pixel opening is a plane. A second inclination angle is formed between the surface of the first electrode 11 exposed by the pixel definition layer 31 and the surface of the substrate 101. The second inclination angle may be an acute angle, and the second inclination angle is substantially the same as the third inclination angle. For example, the difference between the second inclination angle and the third inclination angle does not exceed 3°. The surface of the first electrode 11 exposed by the pixel opening is inclined toward the first display area, so that the vertical distance from the surface of the first electrode 11 exposed by the pixel opening on the side away from the first display area to the surface of the pixel definition layer 31 on the side away from the substrate is less than the vertical distance from the surface of the first electrode 11 exposed by the pixel opening on the side close to the first display area to the surface of the pixel definition layer 31 on the side away from the substrate.

[0092] Figure 9 FIG. is a schematic cross-sectional structure diagram of the first electrode in the second display area of another display substrate according to an embodiment of the present disclosure. Figure 9 May be Figure 7 A cross-sectional view of the first electrode of an anti-peeping sub-pixel in. As Figure 9 shown, the maximum vertical distance between the bottom wall of the groove 109-2 and the convex surface 109-1 is L3, and the range of the maximum vertical distance L3 is: 0.5 μm ≤ L3 ≤ 1.5 μm.

[0093] In an exemplary embodiment, the light-emitting layer 12 at least includes a main body. The main body of the light-emitting layer 12 is disposed on the surface of the first electrode 11 exposed by the pixel opening on the side away from the substrate 101 and is connected to the first electrode 11. The surface of the main body of the light-emitting layer 12 on the side away from the substrate 101 is a plane. A first inclination angle is formed between the surface of the main body of the light-emitting layer 12 on the side away from the substrate 101 and the surface of the substrate 101. The first inclination angle may be an acute angle, and the first inclination angle, the second inclination angle, and the third inclination angle may be substantially the same as each other. For example, the differences between the first inclination angle, the second inclination angle, and the third inclination angle do not exceed 3°. The surface of the main body of the light-emitting layer 12 on the side away from the substrate 101 is inclined toward the first display area, so that the vertical distance from the surface of the main body of the light-emitting layer 12 on the side away from the first display area to the surface of the pixel definition layer 31 on the side away from the substrate is less than the vertical distance from the surface of the main body of the light-emitting layer 12 on the side close to the first display area to the surface of the pixel definition layer 31 on the side away from the substrate.

[0094] In an exemplary embodiment, there is a second minimum vertical distance L2 between the main body of the light emitting layer 12 away from the surface of the substrate 101 and the surface of the pixel definition layer 31 away from the substrate 101; the range of the second minimum vertical distance L2 is: 1 micron ≤ L2 < 1.5 microns. The second minimum vertical distance L2 is the vertical distance between the surface of the main body of the light emitting layer 12 away from the first display area and the surface of the pixel definition layer 31 away from the substrate.

[0095] In an exemplary embodiment, a second minimum vertical distance L2 between a main portion of the light-emitting layer 12 in the second display area away from a surface of one side of the substrate 101 and a surface of the pixel definition layer 31 away from a surface of the side of the substrate 101, and a first minimum vertical distance L1 between a main portion of the light-emitting layer 12 in the first display area away from a surface of one side of the substrate 101 and a surface of the pixel definition layer 31 away from a surface of the side of the substrate 101 satisfy the relationship: L2﹤L1.

[0096] In an exemplary embodiment, a second minimum vertical distance L2 between a main portion of the light-emitting layer 12 in the second display area away from a surface of one side of the substrate 101 and a surface of the pixel definition layer 31 away from a surface of the side of the substrate 101, and a first minimum vertical distance L1 between a main portion of the light-emitting layer 12 in the first display area away from a surface of one side of the substrate 101 and a surface of the pixel definition layer 31 away from a surface of the side of the substrate 101 satisfy the relationship: 0 microns ≤ L1-L2 ≤ 2 microns.

[0097] The display substrate of the disclosed embodiment makes the difference between the first minimum vertical distance L1 in the first display area and the second minimum vertical distance L2 in the second display area greater than 0 microns and less than or equal to 2 microns, thereby improving the brightness of the second display area of ​​the display substrate at a positive viewing angle in the anti-peeping mode, thereby eliminating the poor display caused by the lower brightness of the second display area compared to the first display area; at the same time, it avoids excessive wide-angle light emission from the light-emitting layer 12 in the second display area, thereby ensuring the anti-peeping effect.

[0098] The display substrate of the disclosed embodiment raises the first portion 11-1 of the first electrode 11 by the raised surface 109-1 of the organic medium layer 109 in the second display area, thereby reducing the vertical distance between the surface of the light-emitting layer 12 on the side away from the substrate and the surface of the pixel definition layer 31 on the side away from the substrate in the second display area compared to the first display area, thereby reducing the shielding effect of the pixel definition layer 31 on the wide-angle light emitted by the light-emitting layer 12, improving the brightness of the second display area of ​​the display substrate at a positive viewing angle in the anti-peep mode, and eliminating the poor display caused by the lower brightness of the second display area compared to the first display area.

[0099] In some embodiments, the structure of some shared sub-pixels in the display substrate of the present application can be substantially the same as the structure of the anti-peeping sub-pixels described above. That is, the surface of the organic medium layer of the shared sub-pixel away from the substrate includes a convex surface and a groove. The convex surface forms an acute angle with the surface of the substrate. At least part of the first electrode is disposed on the convex surface and is raised by the convex surface to reduce the vertical distance between the surface of the light-emitting layer away from the substrate on the first electrode and the surface of the pixel definition layer away from the substrate, reduce the shielding effect of the pixel definition layer on the large-angle light emitted by the light-emitting layer, and improve the light extraction efficiency. The details are not described herein again.

[0100] In an exemplary embodiment, the area of the first light-transmitting opening of the first light-shielding layer 21 in the first display area projected onto the substrate is smaller than the area of the first light-transmitting opening of the first light-shielding layer 21 in the second display area projected onto the substrate. For example, the first light-transmitting opening of the first light-shielding layer 21 projected onto the substrate covers the corresponding pixel opening projected onto the substrate. The distance between the outer contour of the first light-transmitting opening of the first light-shielding layer 21 in the first display area projected onto the substrate and the outer contour of the corresponding pixel opening projected onto the substrate is smaller than the distance between the outer contour of the first light-transmitting opening of the first light-shielding layer 21 in the second display area projected onto the substrate and the outer contour of the corresponding pixel opening projected onto the substrate.

[0101] In the embodiment of the present disclosure, the area of the first light-transmitting opening of the first light-shielding layer 21 in the first display area projected onto the substrate is smaller than the area of the first light-transmitting opening of the first light-shielding layer 21 in the second display area projected onto the substrate, increasing the light output of the light-emitting layer in the second display area, improving the brightness of the second display area in the front view angle of the anti-peeping mode of the display substrate, and eliminating the display defect caused by the lower brightness of the second display area compared with the first display area.

[0102] In an exemplary embodiment, the area of the second light-transmitting opening of the second light-shielding layer 22 in the first display area projected onto the substrate is smaller than the area of the second light-transmitting opening of the second light-shielding layer 22 in the second display area projected onto the substrate. For example, the second light-transmitting opening of the second light-shielding layer 22 projected onto the substrate covers the corresponding pixel opening projected onto the substrate. The distance between the outer contour of the second light-transmitting opening of the second light-shielding layer 22 in the first display area projected onto the substrate and the outer contour of the corresponding pixel opening projected onto the substrate is smaller than the distance between the outer contour of the second light-transmitting opening of the second light-shielding layer 22 in the second display area projected onto the substrate and the outer contour of the corresponding pixel opening projected onto the substrate.

[0103] In the embodiments of the present disclosure, the area of the orthographic projection of the display substrate on the substrate through the second light-transmitting opening of the second light-shielding layer 22 in the first display area is smaller than the area of the orthographic projection of the second light-transmitting opening of the second light-shielding layer 22 in the second display area on the substrate, increasing the light extraction amount of the light-emitting layer in the second display area, improving the brightness of the second display area of the display substrate at the front view angle in the anti-peeping mode, and eliminating the display defect caused by the lower brightness of the second display area compared with the first display area.

[0104] The present disclosure also provides a display device, and the display device includes the foregoing display substrate. The display device may be: a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or any other product or component with a display function. The embodiments of the present invention are not limited thereto.

[0105] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0106] In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include at least one of such features.

[0107] In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0108] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0109] In this application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0110] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0111] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A display substrate, characterized in that: The display area includes a light-emitting structure layer disposed on a substrate, the light-emitting structure layer includes a light-emitting device and a pixel definition layer, the light-emitting device includes a first electrode, a light-emitting layer, and a second electrode stacked in sequence in a direction away from the substrate, the pixel definition layer is disposed on a side of the first electrode away from the substrate, the pixel definition layer is provided with a pixel opening, the pixel opening exposes at least a portion of a surface of the first electrode, the light-emitting layer includes a main body, an orthographic projection of the main body on the substrate overlaps with an orthographic projection of a surface exposed by the first electrode on the substrate; The display area includes a first display area and a second display area located on at least one side of the first display area; in the first display area, the main body is away from the surface of one side of the substrate, and there is a first minimum vertical distance from the pixel definition layer away from the surface of one side of the substrate; in the second display area, the main body is away from the surface of one side of the substrate, and there is a second minimum vertical distance from the pixel definition layer away from the surface of one side of the substrate; the first minimum vertical distance is greater than the second minimum vertical distance.

2. The display substrate according to claim 1, characterized in that: A difference between the first minimum vertical distance and the second minimum vertical distance is greater than 0 micrometers and less than or equal to 2 micrometers.

3. The display substrate according to claim 1, characterized in that: The first minimum vertical distance is greater than or equal to 1.5 microns and less than or equal to 3 microns; the second minimum vertical distance is greater than or equal to 1 micron and less than 1.5 microns.

4. The display substrate according to any one of claims 1 to 3, characterized in that: In the second display area, the first electrode includes a first part and a second part connected to at least one side of the first part, the surface of the first part is the surface of the first electrode exposed by the pixel opening, the second part is covered by the pixel definition layer, and the second part has a stepped cross-section perpendicular to the substrate direction.

5. The display substrate according to claim 4, characterized in that: The display area also includes an organic medium layer arranged between the first electrode and the substrate. In the second display area, the surface of the organic medium layer away from the substrate includes a convex surface and a groove surrounding the convex surface. The convex surface is a plane, and the convex surface is roughly parallel to the plane where the substrate surface is located. The first part is arranged on the convex surface, and the second part at least partially covers the bottom wall and side wall of the groove on the side close to the convex surface.

6. The display substrate according to claim 5, characterized in that: The maximum vertical distance between the protruding surface and the bottom wall of the groove is greater than or equal to 0.5 micrometers and less than or equal to 1.5 micrometers.

7. The display substrate according to any one of claims 1 to 3, characterized in that: In the second display area, a first tilt angle is formed between a main portion of the light emitting layer away from a surface of the substrate and a plane where the surface of the substrate is located, and the main portion of the light emitting layer is away from a surface of the substrate and tilted toward the first display area.

8. The display substrate according to claim 7, characterized in that: In the second display area, the surface of the first electrode exposed by the pixel opening is flat, a second tilt angle is formed between the surface of the first electrode exposed by the pixel opening and the surface of the substrate, and the surface of the first electrode exposed by the pixel opening is tilted toward the first display area.

9. The display substrate according to claim 8, characterized in that: The display area also includes an organic medium layer arranged between the first electrode and the substrate. In the second display area, the surface of the organic medium layer away from the substrate includes a convex surface and grooves surrounding the convex surface. The convex surface is a plane, and the convex surface forms a third inclination angle with the plane where the substrate surface is located, and the convex surface is inclined toward the first display area, and at least a portion of the first electrode is arranged on the convex surface.

10. A display device, characterized in that: A display substrate comprising any one of claims 1 to 9.

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